Air-cooled cylinder for internal combustion or explosive engines



July 21, 1925. 1,546,462

F. C. AVERY AIR COOLED CYLINDER FOR INTERNAL COMBUSTION OR EXPLOSIVE ENGINES Filed April 27, 1922 2 Sheets-Sheet l July 21, 1925. 1,546,462

. F. C. AVERY AIR COOLED CYLINDER FOR INTERNAL COMBUSTION OR EXPLOSIVE ENGINES Filed April 2'7, 1922 2 Sheets-Sheet 2 Patented July 21, 1925.

UNITED STATES FREDERICK G. AVERY, OF CHICAGO, ILLINOIS.

AIR-COOLED CYLINDER EOE INTERNAL COMBUSTION OR EXPLOSIV E ENGINES.

Application filed April 2'7, 1822. Serial No. 556,831.

To all whom it may concern:

Be it known that I, FREDERICK C. rrvnnr, a citizen of the United States, residing at Chicago, county of Cook, State of Illinois, have invented new and useful Improve ments in an Air-Cooled Cylinder for Internal Combustion or Explosive Engines.

The object of my invention is to provide an air cooled cylinder for internal combustion engines with an increased radiating surface exposed to the air, and with a free conduction of heat from the cylinder walls, and also the aided cooling by vaporizing the fuel mixture with the excess heat from the cylinder walls.

These and other advantages are attained by the cylinder construction described and illustrated in the accompanying drawings in which Fig. 1 is a vertical section of the cylinder midway through the fuel inlet and the exhaust outlet.

Fig. 2 is a one half view of the top and a one half view of the top cross section as indicated, the opposite half being the same construction.

Fig. 3 is a view of the cylinder showing he air inlet.

Fig. t is avertical section looking toward the fuel inlet and the exhaust outlet.

Fig. 5 is a view of the cylinder showing the air outlet on the fuel inlet and the exhaust outlet side of the cylinder.

Fig. 6 is a cross section of one half of the middle portion and one half of the lower portion of the cylinder, the opposite one half sides being the same construction.

The numerals used to denote the different parts refer to the same members throughout the several views.

In each of the several views of the cylinder is shown the horizontal radiating members 6 integral with the cylinder walls 8 which surround the cylinder chamber 1, except the horizontal radiating member (f which is attached to the fuel inlet chamber walls 9, and the horizontal radiating memher 6* which is attached to the walls of the top portion of the cylinder 2. These horizontal radiating members '6 surround the cylinder walls 8 below the top portion 2, except where intercepted by either the fuel inlet chamber 3 or exhaust chamber 41 and exhaust outlet passage 13, and connect with the outer casing 7. The horizontal radiating member 6" also connects with the outer casing 7, while the horizontal radiating member 6 connects to the top outer casing Between the horizontal radiating members 6 and also between the cylinder walls Sand the outer casing 7 are a series of ver tical radiating members 5 separated in such a way as to form a series of air passages from the cylinder air inlet 10 and the top air inlet 11 to the air outlet 12.

Referring to Fig. 6 and Fig. 2, the air passes through the air inlets 10 and '11 to the air distributing chamber 18 and here the air following the path of the least resistance is distributed through the several air passages and through the air outlet chamber 19 to the outlet 12.

At the top cross section Figi2 the air passes to the distribution chamber 18 and over the top portion of the cylinder 2 and also in contact with the spark plug walls 17 and the walls of the fuel mixture chamber 9.

Passing through the horizontal radiating members 6 is a vertical passage for air 20 which does much to equalize the free flow of air through the several passages for air from the air inlet to the air outlet.'

It will be noticed that the fuel inlet 14 is above the exhaust outlet 13 while directly over the exhaust chamber at is the fuel inlet chamber 3, which extends to the inlet valve inlet 15 at the central top of the cylinder. The fuel mixture enters the fuel inlet chamber 3 and is there preheated before it enters the cylinder chamber 1.

This preheating of the fuel mixture also helps to cool the walls of the inlet chamber for fuel 9 and the walls of the top of the cylinder.

' The arrangement' of the vertical radiating members 5 at the air distributing chamber 18 and between the several horizontal radiating members 6 is'important, as it has much to do with the equal distribution of air, and also leading the air in contact with the hottest part of the cylinder.

It will be noted in Fig. '1 and Fig. 2 that the horizontal radiating member 6 is shortened near the air distributing chamber 18 in order to allow a free flow of air to the top and through the air passages over the top of the cylinder.

The top horizontal radiating member 6 is connected with the fuel inlet chamber walls 9 and the top outer casing 7, while the top vertical radiating member 5 also eral circular passages for air between thehorizontal radiating member 6, and while I have shown the vertical air passages for air 20 between the disconnected ends of the vertical radiating members 5 in Figs. 2 and 6 and yet these vertical radiating members 5 may be connected, and passages 20 may be smaller and located in some other position with much the same effect.

It is lain that the outer casin ma be made larger with a greater number ofvertical radiating members 5 around the cylinder, if desired.

All of the several parts and members of the cylinder shown arecast integral, but it is plain that the cylinder portion and the top portion may be separated and bolted together in the usual way, and this same method of cooling applied. a

The cooling system shown and described may be applied to cylinders cast in multiples with the same effective cooling.

Having described my invention for which I desire'to secure Letters Patent, I claim as follows 1. In an air cooled cylinder for internal combustion engines, a cylinder portion, an outer casing, an inclosure between the cylinder walls and the outer casing, an inlet and an outlet for air on opposite sides of the cylinder, a series of horizontal radiating members connecting the cylinder walls with the outer casing, a series of vertical radiating members partly circling the cylinder within the said inclosure and connecting the horizontal radiating members, said vertical radiating members having separated disconnected endings adjacent tothe air inlet and also adjacent to the air outlet, all in order toprovide a series of passages for air from the air inlet to the air outlet and in contact with the several radiating members.

2. In an air cooled cylinder for internal combustion engines, a cylinder portion, an outer casing, an inclosure between the cylinder walls and the outer casing, an inlet and an outlet for air on opposite sides of the cylinder, a series of horizontal radiating members connecting the cylinder walls with the outer casing, a series of vertical radiating members partly circling the cylinder within the said inclosure and connecting with the horizontal radiating members, said vertical radiating members having separated outer casing, vertical radiating members connecting the horizontal member and within said inclosure, said vertical radiating members having separated disconnected endings adjacent to the air inlet and the air out let, in order to provide passages for air from the air inlet to the air outlet and in contact with the several radiating members and also in contact with the top portion of the cylinder;

l. In an air cooled'cylinder forv internal combustion engines, a cylinder portion, an outer casing, an inclosure between the cylinder walls and the outer casing, an inlet and an outlet for air on opposite sides of the cylinder, a, series of horizontal radiating members connectingthe cylinder walls with the outer casing, a series of vertical radiating members partly circlin the cylinder within said inclosure and connecting with the horizontal radiating members, said vertical radiating members having separated disconnected. endings adjacent to the air inlet and the air outlet and also having separated endings midway between the air inlet and the air outlet, openings through said horizontal radiating members and between said midway separated endings of the vertical radiating members.

5. In an air cooled cylinder for internal combustion engines, a cylinder portion, an outer casing, a series of horizontal radiating members bridged between the cylinder wall and the outer casing, an exhaust outlet connecting with-the cylinder, a fuel inlet directly over the exhaust outlet, a fuel inlet chamber connecting the fuel inlet with the top portion of the cylinder, an inclosure on each side of the cylinder between the walls of the outer casing and the walls of the fuel inlet chamber, an'inlet and an outlet for air on opposite sides of the cylinder, vertical radiating members with disconnected and separated endings between the air inlet and the air outlet and located within the inclosures between the walls of the outer casing and the walls of the fuel inlet chamber, in order to provide passages for air on each side of the fuel inletchamber and also to conduct a flow of air in contact with the walls of the fuel inlet chamber.

6. In an air cooled cylinder for internal combustion engines, acylinder portion, an

outer casing, horizontal radiating members bridged between the cylinder walls and the outer casing, an exhaust outlet connecting with the cylinder, a fuel inlet directly over the exhaust outlet, an inlet and an outlet for air on opposite sides of the cylinder, a fuel inlet chamber connecting the fuel inlet with the top portion of the cylinder, spark plug-walls adjacent to the fuel inlet chamber walls, an inclosure on each side of the cylinder between the walls of the outer casing and the fuel inlet chamber Walls with the adjacent spark plug walls, vertical radiating members located within the inclosures between the walls of the outer casing and the walls of the fuel inlet chamber with the adjacent spark plug walls on each side of the cylinder said vertical radiating members leading from the air inlet to the air outlet, in order to provide passages for air on each side of the fuel inlet chamber and the spark plug walls and also a flow of air in contact with the walls of the fuel inlet chamber and the walls of the spark plug.

7. In an air cooled cylinder for internal combustion engines, a cylinder portion, an outer casing, horizontal radiating members bridged between the cylinder walls and the walls of the outer casing, an opening on one side of the cylinder and between the horizontal radiating members for an air inlet, an opening on the opposite side of the cylinder and between the horizontal radiating members for an air outlet, an air inlet distributing chamber conn'ecting with the air inlet opening, an air outlet chamber connecting with the air outlet opening, vertical radiating members with disconnected separated endings between the air inlet chamber and the air outlet chamber and over the top of the cylinder walls, in order to conduct a flow of air from the inlet chamber to the outlet chamber and in contact with the top walls of the cylinder.

8. In an air cooled cylinder for internal combustion engines, a cylinder portion, an outer casing, horizontal radiating members bridged between the cylinder walls and the walls of the outer casing, a series of openings on one side of the cylinder between the several horizontal radiating members for air inlets, a series of openings on the opposite side of the cylinder and between the several horizontal radiating members for air outlets, a series of air inlet distributing chambers connecting with the several air inlet openings, a series of air outlet chambers connecting with the several air outlet openings, vertical radiating members between the several air inlet distributing chambers and the several air outlet chambers, in order to conduct a flow of air from the air inlets to the air outlets in contact with the several radiating members and cool the cylinder.

9.'In an air cooled cylinder, a cylinder portion, an outer casing, an air inlet and an air outlet on opposite sides of the cylinder, radiating members bridged between the cylinder wall and the outer casing, an exhaust outlet, a fuel inlet directly over the exhaust outlet and on the same side of the cylinder, an exhaust chamber connecting with the exhaust outlet and leadin to the cylinder combustion chamber, a fuel inlet chamber directly over the exhaust chamber and connecting the fuel inlet with the cylinder inlet at the central top portion of the cylinder, passages for air from the air inlet to the air outlet and passages for air on opposite sides of the fuel inlet chamber connecting the air inlet with the air outlet.

FREDERICK O. AVERY. 

